Home / 20,866.84-31,301.96-6,826.58

Finding the Fourth Proportional to 20,866.84, 31,301.96 and 6,826.58

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Solution

The fourth proportional to 20,866.84, 31,301.96 and 6,826.58 is: 10,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.84 : 31,301.96 = 6,826.58 : x
  2. Step 2: Convert to fraction form
    20,866.84/31,301.96 = 6,826.58/x
  3. Step 3: Cross multiply
    20,866.84x = 31,301.96 × 6,826.58
  4. Step 4: Simplify right side
    20,866.84x = 213,685,334.10
  5. Step 5: Solve for x
    x = 213,685,334.10/20,866.84
  6. Step 6: Final answer
    x = 10,240.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.